Climateby Month

Temecula, CA weather in May

NOAA 1991-2020 normals and daily records · Temecula all year

Expect warm, dry weather in Temecula in May, with highs near 82°F and lows near 54°F. Rain falls on about 1 day. Good for outdoor plans.

Normal high
82°F
Normal low
54°F
Wet days
1
0.2 in total
Muggy days
0
dew point 65°F+

How May changes from start to finish

Normal values at the start and end of May
May 1May 31
Normal high79°F86°F
Normal low51°F56°F
Chance of a wet day6%3%
Sunrise / sunset6:00 am / 7:31 pm5:39 am / 7:52 pm
Daylight13.5 h14.2 h

Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).

A typical May day

  1. 6 am56°Fdew point 50°F
  2. 9 am67°Fdew point 49°F
  3. Noon76°Fdew point 47°F
  4. 3 pm78°Fdew point 48°F
  5. 6 pm71°Fdew point 49°F
  6. 9 pm61°Fdew point 50°F

NOAA hourly normals (local standard time) from March AFB (29 mi away); average wind 6 mph; clear or few clouds in 65% of daytime hours, mostly cloudy or overcast in 26%.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F11 of 31
  • Hot dayshigh 90°F or more9 of 31
  • Muggy daysdaily mean dew point 65°F or more0 of 31
  • Wet daysat least 0.01 in of rain or melted snow1 of 31
  • Notable rainat least 0.10 in1 of 31
  • Freezing nightslow 32°F or below0 of 31

Average days per May, counted from daily records for each year 1991-2020.

Rain in May

Normal precipitation is 0.2 in; a dry May brings about 0.0 in and a wet one about 0.2 in (25th and 75th percentiles). Days with half an inch or more are rare.

How May varies from year to year

  • Warmest May, 1991-20201997: average high 93°F
  • Coolest May1998: average high 74°F
  • Wettest May1998: 1.3 in
  • Driest May1993: no measurable precipitation
  • Highest reading109°F (May 28, 2003)
  • Lowest reading39°F (May 26, 2003)

From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.

May compared with April and June

AprilMayJune
Normal high77°F82°F90°F
Normal low49°F54°F58°F
Wet days310
Comfortable days15114
Daylight13.0 h13.9 h14.3 h

Highs change by +5°F from April and +8°F into June.

Nearby alternatives in May

How Temecula ranks in May

  • Normal high110th warmest of 378 cities; 10th of 60 in California
  • Wet days16th driest of 378
  • Comfortable days201st most of 339

What to pack for Temecula in May

  • Layers – afternoons near 82°F but nights near 54°F

Heating and cooling

May has 42 heating degree days and 132 cooling degree days (base 65°F), 5% of the year's total heating and cooling demand.

Questions

How hot is Temecula in May?

The normal high is 82°F and the normal low is 54°F. From 1991 to 2020 the hottest May reading was 109°F (May 28, 2003).

Does it rain a lot in Temecula in May?

About 1 days in May have at least 0.01 in of precipitation, and the normal total is 0.2 in. The wettest May in 1991-2020 was in 1998 (1.3 in); the driest was in 1993, with no measurable precipitation.

Is May a good time to visit Temecula?

May ranks 5th of 12 months on our comfort score for Temecula (66 out of 100). It has about 11 comfortable days and about 9 days at 90°F or hotter. The best months are March and April.

Where the numbers come from

  • Temperature, rain, snowfall and snow depth: Elsinore (USC00042805), 18 mi NW of the city center, 1,268 ft (257 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Frost dates: Fallbrook 5 Ne (USW00053151), 4.5 mi SSW of the city center, 1,140 ft (129 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour and cloud cover: March AFB (USW00023119), 29 mi NNW of the city center, 1,516 ft (505 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: March Air Reserve Base (722860-23119), 29 mi NNW of the city center, 1,536 ft (525 ft higher than the city). Hourly observations, 1991-2020.